"Isn't that Zhao Na?"
When Zhao Na passed by the classroom doorway, Chen Shuang caught a glimpse of her out of the corner of her eye.
And being a clever and socially experienced woman, Chen Shuang immediately realized that Zhao Na had come to her to offer a detailed explanation of what had just happened at the school entrance.
Chen Shuang scoffed to herself, thinking, what's there to explain anyway? You're just a whore, aren't you? Chen Shuang even suspected that Zhao Na must have been drugged, otherwise how could she have behaved so improperly? To even go so far as to grab that nasty security guard's thing.
"Eh? Where did Zhao Na go?"
Upon looking up again, Chen Shuang couldn't see Zhao Na anymore.
Chen Shuang was momentarily startled, then she thought that probably Zhao Na was too embarrassed and hadn't yet figured out what to say to her.